Andrew 7.3-Meter ESA User manual

Andrew Corporation

10500 West 153rd Street

Orland Park, IL U.S.A. 60462

Telephone: 708-349-3300

FAX (U.S.A.): 1-800-349-5444

Internet: http://www.andrew.com

Customer Service, 24 hours: U.S.A. • Canada • Mexico: 1-800-255-1479

U.K.: 0800 250055 • Republic of Ireland: 1 800 535358

Other Europe: +44 1592 782612

15 August, 2005

Installation, Operation and Maintenance

Bulletin OM73

Type ES73( )

7.3-Meter ESA

7.3-Meter Earth Station Antenna

Revision F

Introduction

How to Use This Manual

Getting Started

Installation

Procedures

Operation

Preventive

Maintenance

Table of Contents

2

Table of Contents

Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Proprietary Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Information and Assistance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Technical Assistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Content . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Recommended Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Parts Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Reporting Equipment Loss or Damage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Reporting Visible Loss or Damage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Reporting Concealed Damage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Inventory Equipment Received . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Returning Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Foundation Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

A-325 Tensioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Tripod Ground Mount Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Azimuth Beam Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Support Legs Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Panning Frame Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Elevation Jackscrew Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Azimuth Jackscrew Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

Mount Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Reflector/Subreflector/Feed Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Feed/Waveguide Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Reflector/Backstructure Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

Subreflector Strut Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Reflector to Ground Mount Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48

Subreflector Assembly and Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Cross-Axis Grounding Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Acquiring A Satellite . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Subreflector Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

General Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Electrical Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59

Mechanical Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Inspection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60

Local Control/Motor Drive Controller. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61

Drive System Voltage and Current Checks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63

Preservation of Component Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

Aluminum Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

Galvanized Surfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

Jackscrews/Motors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

Gear Motor/Housing Fill Drain Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

Introduction

Like all Andrew earth station antennas, the 7.3-Meter Earth Station Antenna provides

high gain and exceptional pattern characteristics. The electrical performance and excep-

tional versatility provides the ability to configure the antenna with your choice of linearly-

or circularly-polarized 2-port or 4-port combining network. That versatility is provided at

the time of initial purchase, as well as in the future, as your satellite communication

requirements evolve.

The aluminum reflector is precision formed for accuracy and strength requiring minimal

assembly. The reflector assembly is 24-feet (7.3-meters) in diameter and segmented in

a sixteen piece configuration to reduce shipping volume and facilitate transport to

remote sites. Reflector panels are conversion coated and painted with a highly reflective

white paint.

The versatile tripod mount can be purchased with either manual or motorizable capabili-

ties. The tripod mount features 180 degree azimuth coverage in three continuous 120

degree overlapping ranges and executes 85 degree (5 - 90 degree) continuous eleva-

tion adjustment. This large adjustment range provides non-critical foundation orientation

and the ability to view geostationary satellites from horizon-to-horizon, from any location

worldwide.

The motorizable tripod mount features self-aligning bearings for the elevation pivots,

resulting in "zero" backlash. This mount can be operated manually, but has the ability to

be upgraded for motorized operation, including steptracking/Smartrack™ applications.

The motorizable mount type is indicated by the ES73 or ES73HS letters within the

antenna type number. The addition of the letter "HS" within the antenna type number

indicates that the mount includes High-Speed azimuth/elevation machine jackscrews.

The azimuth/elevation jackscrews are equipped for integration with the optional motor

drive systems. A cross-axis grounding kit is supplied with each mount to ensure electri-

cal interconnectivity of the complete structure.

The aluminum enclosure and hot-dipped galvanized steel mount maintain pointing accu-

racy and ensures durability and reliability. The antenna and standard manual mount with

enclosure will survive 125 mph (200 km/h) wind, in any position of operation, without

damage or permanent deformation in moderate coastal/industrial areas. Severe condi-

tions require additional protection.

Andrew provides a complete line of available options, including motor drive systems

(with power interfaces addressing domestic and international standards), remote micro-

processor antenna control for motor drive systems, pressurization equipment, and inter-

connecting HELIAX

®

cables and waveguide.

3

Introduction

7.3-Meter Earth Station Antenna

Proprietary Data

Information and

Assistance

Notice

Technical

Assistance

The technical data contained herein is proprietary to Andrew Corporation. It is intended

for use in operation and maintenance of Andrew supplied equipment. This data shall not

be disclosed or duplicated in whole or in part without express written consent of Andrew

Corporation.

Andrew Corporation provides a world-wide technical support network. Refer to the tech-

nical assistance portion of this this manual for the contact numbers appropriate to your

location.

The installation, maintenance, or removal of antenna systems requires qualified, experi-

enced personnel. Andrew installation instructions have been written for such personnel.

Antenna systems should be inspected by qualified personnel to verify proper installation,

maintenance and condition of equipment.

Andrew Corporation disclaims any liability or responsibility for the results of improper or

unsafe installation and maintenance practices.

All designs, specifications, and availabilities of products and services presented in this

manual are subject to change without notice.

4

Introduction

24-hour Technical Assistance

For technical assistance, call the following numbers at anytime.

Call From Call To Telephone Fax

North America (toll free) U. S. A. 1+800-255-1479 1+800-349-5444

Any Location U. S. A. 1+708-349-3300 1+708-349-5410

(International)

Customer Service Center

The Andrew Customer Service Center gives you direct access to the information and

personnel service you need, such as the following:

• Place or change orders

• Check price and delivery information

• Request technical literature

You can call from any of the following:

Call From Telephone Fax

North America 1+800-255-1479 (toll free) 1+800-349-5444 (toll free)

United Kingdom 0800-250055 (toll free) 44-118-9366-777

Australia 1-800-803-219 (toll free) 61-3-93579110

China 00-800-0-255-1479 00-800-0-349-5444

New Zealand 0800-441-747 (toll free) 61-3-3579110

Hong Kong 001-800-0-255-1479 002-800-0-349-5444

Overview

Content

The scope of this manual is intended to provide station personnel with the base installa-

tion, operation, and maintenance requirements necessary for a 7.3-Meter C-, X- or Ku-

Band Earth Station Antenna. This manual provides a convenient reference for autho-

rized operator/service personnel requiring technical information on general system or

specific subsystem equipment.

The tables and figures presented in this manual are used as communication aids for the

installation, operation, and maintenance of the 7.3-Meter Earth Station Antenna. These

tables and figures instantly convey messages, as well as make the procedures easier to

understand. This manual uses tables and figures for the following references:

• Tables The tables allow you to locate information quickly and easily.

• Drawings The drawings supplement the installation instructions by using a combi-

nation of graphics and verbage to assist you in simplifying complex pro-

cedures and clarifying components.

• Photographs The photographs compliment the installation instructions by providing

actual examples of the steps being performed, which allow you to view

the installation progress in the proper sequence.

The manual is divided into five distinct sections, each dealing with a specific technical

topic relating to either system or component subsystem information. The sections con-

tained in this manual are described and listed under the following technical headings:

• How to Use Describes the manual's purpose, content, and communication aids.

This Manual Additionally, this section lists the related documentation for the 7.3-

Meter Earth Station Antenna.

• Getting Provides the preliminary information needed to perform a successful

Started installation. This section should be reviewed prior to the installation. The

warnings, recommended tools, parts verification, instructions on report-

ing lost or damaged equipment, and installation checklist are located in

this section.

• Installation Provides the procedures for the different phases of a 7.3-Meter Earth

Procedures Station Antenna base installation. This section will help you easily find

requirements for an individual task, as well as displays the sequence for

each task execution.

• Operation Describes the controls, functions, and general operating procedures

required for proper operation of the 7.3-Meter Andrew Earth Station

Antenna.

• Preventive Describes preventive maintenance procedures that are required to

Maintenance maintain proper functional operation of your new Andrew Earth Station

Antenna.

5

How to Use This Manual

Overview

Warnings

The installation, operation, and maintenance of the 7.3-Meter Earth Station Antenna

requires qualified and experienced personnel. Andrew installation, operation, and main-

tenance instructions are illustrated for such personnel. Additionally, the antenna should

be inspected by qualified personnel to verify proper installation, maintenance, and con-

dition of equipment as described in Preventive Maintenance. The basic equipment and

accessories are either manufactured or design controlled by Andrew Corporation.

The prerequisite information necessary for the 7.3-Meter Earth Station Antenna can be

found in this section. Furthermore, this section should be reviewed BEFORE performing

the installation, operation, or maintenance. Recommended warnings, recommended

tools, and the antenna parts can be verified and/or determined with such a review.

When installing the 7.3-Meter Earth Station Antenna, be conscious of the recommended

warnings presented below. For further information or clarification of this information,

contact the Customer Service Center. The recommended warnings are as follows:

1. Electrical shock from voltages used in this antenna system may cause personal injury

or death. Prior to making any electrical connections or performing maintenance or

repair, ensure that the power is removed. Electrical connections should be made only by

qualified personnel in accordance with local regulations.

2. Installation of antennas may require persons to work at elevated work stations.

Whenever persons are working at eight or more feet above the ground and not on a

guarded platform, they should wear safety belts with at least one (preferably two) lan-

yards.

3. Never stand underneath any object while it is being lifted.

4. Always wear a hard hat, especially if someone is above you.

5. Make sure no person is in or under the reflector while it is being lifted or positioned;

personal injury can result if the reflector assembly falls.

6. Personnel should never be hoisted in or out of the reflector by the crane; personal

injury may result.

7. Andrew earth station antennas supplied to standard product specifications will survive

125 mph winds in any operational position in moderate coastal/industrial areas. Severe

conditions require additional protection. Should it be expected that winds will exceed

125 mph, it is recommended that Andrew antennas be steered to specific azimuth and

elevation orientations to minimize wind forces upon the structure and thereby increase

the probability of survival.

8. It is recommended that all cross-axis waveguide and coaxial cables are secure such

that high winds will not cause excessive flexing. Position the antenna to an elevation of

90 degrees. The azimuth jackscrew should be placed in the center of its travel.

9. When the antenna is transmitting, severe eye injury or injury to other parts of the

body can result from exposure to radio frequency (RF) energy. The antenna must be

turned off before entering the area in front of the reflector and near the feed.

6

Getting Started

Recommended

Tools

NOTE: Failure to follow an installation procedure could result in damage to equipment

or personal injury.

Additional warnings will be displayed throughout this manual for your awareness. These

warnings can be identified in warning boxes as shown in the following sample.

Andrew disclaims any liability or responsibility for the results of improper or unsafe

installation, operation, or maintenance practices.

Andrew supplies all appropriate hardware/parts required for the installation of your 7.3-

Meter Earth Station Antenna. All tools necessary for the installation process should be

provided by the installation crew. Andrew recommends the following tools to be used for

a proper installation of the 7.3-Meter Earth Station Antenna.

Tool Size Quantity

Open End or Combination Wrenches 5/16 Inch 2

7/16 Inch 2

9/16 Inch 2

7/8 Inch 2

3/4 Inch 2

1/2 Inch 2

1-1/4 Inch 1

Crane 1 Ton Minimum Capacity, extended end 1

Nylon Web Slings (2000 pound breaking strength) 3 Inch by 14 Foot 2

Rope or Cord (2000 pound breaking strength) 50 Foot 1

Shackles 5/8 Inch 2

Ladder 10 Foot Extension 1

Drive Sockets 1/16 Inch 1

9/16 Inch 1

7/8 Inch 1

3/4 Inch 1

1-1/4 Inch 1

Breaker Bar 1/2 Inch 1

Spud Wrenches 1-1/16 Inch 1

1-1/4 Inch 1

Screw Driver Standard 1

Phillips 1

Allen Wrench 7/64 Inch 1

3/16 Inch 1

1/4 Inch 1

Tape Measure (or other measuring device) Standard 1

Felt-tip Marker (or other marking device) Standard 1

Hammer Standard 1

Rubber Mallet Standard 1

Pry Bar Standard 1

Tin Snips Standard 1

Safety Gloves (each installer) Standard 1

Table 2-1. Recommended Tools

7

Getting Started

Parts Verification

Reporting

Equipment Loss or

Damage

Reporting Visible

Loss or Damage

Reporting

Concealed

Damage

Inventory

Equipment

Received

Andrew Corporation thoroughly inspects and carefully packs all equipment before ship-

ment. If you find that there are missing components, please notify Andrew Corporation

immediately by contacting the Customer Service Center (refer to page 4).

If you find that there was damage caused to the equipment during the shipping process,

a claim should be filed with the carrier. Follow the "Reporting Visible Loss or Damage"

or "Reporting Concealed Damage" procedures when filing a claim with the carrier.

Make a note of any loss or evidence of external damage on the freight bill or receipt,

and have it signed by the carrier's agent. Failure to adequately describe such external

evidence of loss or damage may result in the carrier refusing to honor a damage claim.

The form required to file such a claim will be supplied by the carrier.

Concealed damage means damage which does not become apparent until the unit has

been unpacked. The contents may be damaged in transit due to rough handling, even

though the carton may not show external damage. If you discover damage after unpack-

ing the unit, make a written request for an inspection by the carrier's agent, then file a

claim with the carrier since such damage is most likely the carrier's responsibility.

After opening your shipment, an inventory of the parts should occur immediately. Check

each item received in your shipment against the packing slip included with the shipment.

If any items are missing, please refer to page 9 for step-by-step instructions on how to

properly report the equipment loss.

8

Getting Started

Returning

Equipment

Step 1

Step 2

Step 3

Step 4

Step 5

Andrew Corporation tries to ensure that all items arrive safe and in working order.

Occasionally, despite these efforts, equipment is received which is not in working condi-

tion. When this occurs, and it is necessary to return the equipment to Andrew

Corporation for either repair or replacement, return can be expedited by following the

procedure listed below:

Call the Andrew Customer Service Center and request a Return Material Authorization

(RMA) number, as well as an address to forward the material.

Tag or identify the defective equipment, noting the defect or circumstances. Also, be

sure to write the RMA number on the tag. It would be helpful to reference the sales

order and purchase order, as well as the date the equipment was received.

Pack the equipment in its original container with protective packing material. If the origi-

nal container and packing material are no longer available; pack the equipment in a

sturdy corrugated box, and cushion it with appropriate packing material.

Be sure to include the following information when returning the equipment:

• Your Company Name

•

Your Company Address

• City, State, and Zip Code

•

Telephone Number

• RMA Number

• Problem Description

• Contact Name

NOTE: Absence of the RMA number will cause a delay in processing your equipment

for repair. Be sure to include the RMA number on all correspondence.

Ship the equipment to Andrew Corporation using UPS, U.S. Postal Service, or other

appropriate carrier; freight prepaid and insured. The material should be forwarded to the

address given by the Andrew contact in Step 1.

9

Getting Started

Overview

Foundation

Preparation

10

Installation Procedures

This section provides installation procedures for the 7.3-Meter Andrew Earth Station

Antenna. The installation procedures include instructions on the following antenna com-

ponents:

• Mount • Reflector-to-Mount Assembly

• Reflector • Subreflector

• Enclosure • Feed System (C-, X- or Ku-band)

Before beginning the installation process on the ground mount assembly, ensure that

the foundation has been prepared. Foundation specifications are provided by Andrew

and may be used as a reference by civil engineering personnel when preparing the

foundation for local soil conditions. These specifications are available before the ship-

ment arrives by contacting the Customer Service Center or your Account Manager.

• Foundation should be dimensioned as detailed in Figure 1.

• Sweep foundation clear of any dirt or debris.

• To ensure smooth surface for mount, scrape foundation pads as shown in Figure 2.

• Studs should extend 3 in. above the surface and are 7/8 in. in diameter

• Apply stick wax to stud threads to ease later connections.

Installation Procedures

Figure 1

Figure 2

A-325 Tensioning

Step 1

Step 2

Step 3

Step 4

Step 5

Step 6

11

During the installation process, there are several references to the A-325 hardware ten-

sioning procedure. The A-325 hardware must be properly tensioned to avoid slippage

between bolted surfaces under high loads. Slippage can cause the corresponding

assembly to move, causing antenna misalignment. When designated, the A-325 hard-

ware should be tightened according to the following tensioning procedure.

NOTE: Tensioned bolts are for final connections only and should not be loosened for

reuse.

Lubricate the bolt threads with the provided stick wax to reduce friction.

Insert the bolt, and add a flat washer—if required. Do not allow wax under the flat

washer.

Add the nut, and finger tighten.

After the connections are complete, tighten the bolts until the surfaces are joined and

the nuts are snug (for example, full effort of a person using an ordinary spud wrench).

Do not proceed with Steps 5 and 6, unless the connection is final and is not intended to

be loosened again.

Note: If the bolts are loosened after Steps 5 and 6, discard and replace with new hard-

ware.

Using a felt-tip marker, mark the nuts and the ends of the bolts with a straight line as

shown in Figure 3-1a and Figure 3-1b.

Tighten the nuts further with an extra long wrench until the nuts are moved 1/3 turn (120

degrees) as shown in Figure 3-1a for bolt lengths less than four diameters and 1/2

turn (180 degrees) as shown in Figure 3-1b for bolt lengths over four diameters.

Figure 3-1a: A-325 Tensioning Procedure Figure 3-1b: A-325 Tensioning

For bolts less than 4 diameters For bolts over four diameters

Installation Procedures

Use Felt Marker

Before

Tensioning

After

Tensioning

Use Felt Marker

Before

Tensioning

After

Tensioning

Tripod Ground

Mount Assembly

Azimuth Beam

Assembly

Step 1

Step 2

Step 3

12

The three-point mount is an elevation-over-azimuth mount optimized for geostationary

satellite applications. The mount enables continuous elevation adjustment from 5 to 90°.

Azimuth adjustment is ±90° and divided into three 120° ranges with 30° overlap. Follow

the subsequent procedures for proper installation of tripod ground mount assembly.

All ground mount hardware is type A-325. Lubricate all A325 bolt threads with supplied

stick wax. Note: Do not tighten hardware until ground mount installation is complete

unless otherwise instructed.

Attach 200056 and 200057 supports to upper portion of 201408 beam assembly as

shown in Figure 3.

• Use 7/8 x 2-1/4 in (57 mm) hardware

Installation Procedures

Figure 3

Raise 201408 azimuth beam assembly and attach to front foundation pad as shown in

Figure 4.

• Use 7/8 in. flatwashers and hex nuts

Note: Hex nuts and flatwashers supplied with 201630 anchor bolt kit

Figure 4

Support Legs

Assembly

Step 1

Step 2

13

Attach 201327A joint assembly to 201313A beam assembly as shown in Figure 5.

Attach 200083 angles to 201313A beam assembly as shown in Figure 5.

• Use 7/8 x 2-1/4 in (57 mm) bolts and nuts for each connection

Installation Procedures

Figure 5

Attach 200088A joint assembly to 201313A beam assembly as shown in Figure 6.

• Use 7/8 x 2-1/4 in (57 mm) bolts and nuts

Figure 6

Step 3

Step 4

14

Raise 201313A beam assembly to upright position and attach 201315 supports to

201327A joint assembly as shown in Figure 7.

• Use 7/8 x 2-1/4 in (57 mm) bolts and nuts

•

Insert bolts from 201327A joint assembly to supports

• Supports should be installed back-to-back with the flat of angle facing upwards

• Tighten supports until assembly can support itself

Installation Procedures

Figure 7

Attach 201301/201302 rear pad assembly to 201315 supports as shown in Figures 8 thru 10.

• Use 7/8 x 2-1/4 in (57 mm) bolts and nuts

• Insert bolt from inside of rear pad assembly to outside of support

• Supports should be installed back-to-back with the edges forward and the flats of

angles facing rear

Figure 8

201315

Supports

Step 5

Step 6

15

Attach 201314 supports to 201301/201302 rear pad assemblies and 201273 joint

assembly as shown in Figures 9 and 10.

• Use 7/8 x 2-1/4 in (57 mm) bolts and nuts

•

Insert bolt from inside of joint assembly to outside of support

• Supports should be installed back-to-back with the edges forward and the flats of

angles facing rear

Installation Procedures

Figure 9

Attach 201317 supports between angle pairs as shown in Figure 10. Select correspond-

ing mounting holes so that 201317 supports are parallel to 201313A beam assembly.

• Use 7/8 x 2-3/4 in (70 mm) hardware

• Supports attached with edges inward and flats facing up.

Figure 10

Panning Frame

Assembly

Step 1

16

Attach 201487 panning frame to 221384 azimuth pivot assembly as shown in Figures 11

and 12. Note: Ensure pivot assembly resolver/limit switch mounting holes are downward.

• Use 7/8 x 2-1/4 in (57 mm) hardware and apply supplied RTV to flange surfaces as

indicated

•

Bolts should connect from panning frame to pivot assembly

Installation Procedures

Figure 11

Figure 12

Step 2

17

Attach 221608 joint assemblies to panning frame as shown in Figures 13 and 14.

• Use 7/8 x 2-1/4 in (57 mm) hardware

• Insert bolts from panning frame to joint assembly

Installation Procedures

Figure 13

Figure 14

Step 3

Step 4

18

Attach 201316 support pairs to 221608 joint assemblies as shown in Figure 15.

• Place supports back-to-back with edges out and flat of angle inward

• Install 45967 spacer at midpoints of support pairs

• Use 7/8 x 2-1/4 in (57 mm) hardware for each connection

Installation Procedures

Figure 15

Attach 221345 azimuth pivot assembly to 201316 support pairs. Attach 201596 mount-

ing plates to 221345 azimuth pivot assembly tab as shown in Figure 16.

• Use 7/8 x 2-1/4 in (57 mm) hardware for each connection

• Insert bolts from rear of pivot assembly to connect supports

Figure 16

201316

Supports

221345 Azimuth

Pivot Assembly

201316

Supports

201596

Mounting Plates

Step 5

Step 6

19

Attach 201770 plate connecting 201484/201484-2 extension assembly to 201487 pan-

ning frame as pictured in Figure 17.

• Use 7/8 x 2-1/4 in (57 mm) hardware

• Insert bolts from inside panning frame assembly

Installation Procedures

Figure 17

Attach 201488 outrigger plate to opposite end of 201487 panning assembly. Attach

201481/201482 supports to outrigger plate as shown in Figure 18.

• Use 7/8 x 2-1/4 in (57 mm) hardware

• Insert bolts from supports to the outrigger plate

Figure 18

201770

Plate

201484/201484-2

Extension Assembly

201487

Panning Frame

201487

Panning Frame

201482

Support

201481

Support

201488

Outrigger Plate

Step 7

Step 8

20

Attach second 201488 outrigger plate to 201487 panning frame assembly as shown in

Figure 19.

• Use 7/8 x 2-1/4 in (57 mm) hardware

• Insert bolts from inside assembly to outrigger plate

Installation Procedures

Figure 19

Attach 221721 elevation axis assembly to 201487 panning frame assembly and 221608

joint assemblies as shown in Figures 20 and 21.

• Use 7/8 x 2-1/4 in (57 mm) hardware

• Insert bolts from elevation axis assembly to panning frame assembly and joint assem-

bly

Figure 20

201488

Outrigger Plate

201487

Panning Frame

221721

Elevation Axis Assembly

Page is loading ...

Andrew 7.3-Meter ESA User manual

This manual is also suitable for

Andrew 7.3-Meter ESA User manual

Related papers

Other documents